(19)
(11) EP 1 552 106 A1

(12)

(43) Date of publication:
13.07.2005 Bulletin 2005/28

(21) Application number: 03758373.9

(22) Date of filing: 07.10.2003
(51) International Patent Classification (IPC)7: E21B 37/06, E21B 37/08, C12P 1/00
(86) International application number:
PCT/HU2003/000079
(87) International publication number:
WO 2004/031536 (15.04.2004 Gazette 2004/16)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 07.10.2002 HU 0203394
06.05.2003 HU 0301225

(71) Applicant: Mol Hungarian Oil and Gas Co.
5001 Szolnok (HU)

(72) Inventors:
  • HLATKI, Miklos
    H-5000 Szolnok (HU)
  • MECS, Imre
    H-6725 Szeged (HU)
  • PUSKAS, Sándor
    H-6725 Szeged (HU)
  • BALAZS, János
    H-6723 Szeged (HU)
  • KALMAN, Miklos
    H-6792 Zsombo (HU)
  • LENGYEL, Gyula
    H-6723 Szeged (HU)

(74) Representative: Svingor, Adam, Dr. 
Danubia Patent &Trademark AttorneysBajcsy-Zsilinszky ut 16.
1051 Budapest
1051 Budapest (HU)

   


(54) METHOD FOR THE TREATMENT AND PREVENTION OF ASPHALTENE-PARAFFIN-VAX PRECIPITATES IN OIL-WELLS, WELLHEADS AND PIPELINES BY THE USE OF BIOCOLLOID SUSPENSIONS